power: seed switch implementation

src/power/switch/SDL_syspower.c

@@ -0,0 +1,68 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2015 Sam Lantinga <[email protected]>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_POWER_DISABLED
+#if SDL_POWER_SWITCH
+
+#include <switch.h>
+#include "SDL_power.h"
+
+SDL_bool
+SDL_GetPowerInfo_SWITCH(SDL_PowerState *state, int *seconds,
+                        int *percent) {
+    PsmChargerType chargerType;
+    u32 charge;
+    //double age;
+    Result rc;
+
+    rc = psmGetChargerType(&chargerType);
+    if (R_FAILED(rc)) {
+        *state = SDL_POWERSTATE_UNKNOWN;
+        *seconds = -1;
+        *percent = -1;
+        return SDL_FALSE;
+    }
+
+    psmGetBatteryChargePercentage(&charge);
+    *percent = (int) charge;
+
+    // TODO: use approximation for now, ~6h00 for a fully charged battery
+    *seconds = ((int) charge * 21600) / 100;
+    //psmGetBatteryAgePercentage(&age);
+    //*seconds = (int) age;
+
+    if (chargerType == PsmChargerType_Unconnected) {
+        *state = SDL_POWERSTATE_ON_BATTERY;
+    } else if (chargerType == PsmChargerType_EnoughPower) {
+        *state = SDL_POWERSTATE_CHARGED;
+    } else {
+        *state = SDL_POWERSTATE_CHARGING;
+    }
+
+    return SDL_TRUE;
+}
+
+#endif /* SDL_POWER_SWITCH */
+#endif /* SDL_POWER_DISABLED */
+
+/* vi: set ts=4 sw=4 expandtab: */